Dental impression-tray.



M. O. TEEIN.

DENTAL IMPRESSION TRAY.

APPLIOATION FILED 00124, 1912.

1,054,999, rammed Mar.4,1913.

Inventor: Mwlimz'loa. 0. T/zez'rv, B ma fyfiug.

-- oration:

I W T srarnsraran r MAXIll/IILIAN O. THEIN, OF NEW' YORK, N. Y.

rrio

DENTAL" IMPRESSION-TRAY.

Specification of Letters Patent.

Application filed October 24, 1912. Serial No. 727,482.

Patented Mar. 4,1913.

To all whom it may concern:

Be' it known that I, MAXnumAN O. Tnnnx, a subject of the Emperor of Germany, residing in the borough of Manhattan,in the city, county, and hate of New Yort, have invented new and useful Improvements in Dental Impression-Trays, of

= able to the conformation of different. sizes .of months and jaws, and to-provide a de- Jvic'e of this character which is simple and cheap inconstruction and efficient inoplnical rying out the invention I provide wag-supporting base having a handle, and adijust-ably mount on said base a sectional carrier for the impression material, these sections being prefcrablythree in number comprising substantially flat members bent up at the lateral edges to form vertical walls, one section being curved and constituting the forward section of the tray and the other two sections the sides, and all adjustable relatively to each other on. the support to increase or decrease the size and to change the?conformation of the tray adapting the szii'ne to a large or small mouth and readily applicable to determine the width of the arch.

A further object. of the invention relates to the provision of an adjustable gage to determine the height of the palate, and means to lock it in its adjusted positions.

In the drawing; accompanying and town ing a part of this specification, Figure l is a perspective view of an impression tray illustrating an embodiment of my invention adapted to take an impression of the lower jaw, the parts beingadjusted to provide an impression tray of the smallest size. Fig. 2 is a plan viewpf the tray illustrated in Fig. l With the parts adjusted to provide an impression tray of the largest size. Fig.

' 3 is a perspective view of an impression tray embodying my invent-ion adapted to take an impression of. the upper jaw, the

parts being adjusted to provide an impression tray of the smallest size; said view also'illustrating the adjustable gage for determining the height of the palate. Fig.4 is a plan view of the tray illustrated in Fig. 3 with the parts adjusted to provide an ill'lPI'QSSlOll tray of the largest size; and Fig. 5 is an end elevation of the tray illus trated in Figs. and

Similar characters of reference designate like parts throughout the different views of the drawing.

In Figs. 1 and 2 of the drawing 1 have illustrated an embodimentof my invention adapted to take an impressioi'i of the lower jaw or the dentition of such aw, comprising a supporting base l3 substantially of .U- shape having a handle A. The member for carrying the moldingcomposition. is adjustably supported on said support and consists of a front section E comprising a flat plate bent up at the forward end to form a substantially vertical wall circular in formation. This section is adjustably secured to the base B by a set screw F engaging in'a Slot. C 1n the flat portion of said section. By loosening the screw the section may he adjusted longitudinally in a plane parallel i with the and handle of the support, or ri'itatably adjusted with the set screw as a pivotf The sides of the tray consist. of a pair of sections G, G, comprising a flat portion with the sides bent up to form substan tially channel sect-ions with the outer wall constituting a continuation of, the wall E of the trout section. By constructing the sections in this manner the impression material will be in the iorm of a ridge in which the impression can be readily made. These sections are adjustably connected to the support B by setscrews D, D, engaging in slots F, the slots being diagonal or at an angle to the slot in the section E, whereby as the sections are adjusted in a. plane parallel with the longitudinal adj nst-mentof the section E to increase or decrease the length of the tray. they will also be laterally adjustod'to inc; use or decrease the width of the tray and thereby detcrn'iine the width of the arch of the mouth.

in Figs. 3, l and 5 l have illustrated an mulauliiuent of my invention in connection with an llllllft sion tray adaptable for talc inn an inipres. ion oi the upper jaw orthe dentition o1", su h jaw. The construct-ion illustrated in these figures is sulmtantially the some as shown in Figs. 1 and El with the exception that; the supporting base instead of being U-shaped is substantially Hat with a. portion centrally of the end arched or recessed, as at J, for a purpose to be hereinafter described. Also the side sections G, Gr,

forward end, said member H being fixed to a threaded stem I adapted to pass through an opening in the elevated portion J in the support. The gage is locked in its adjusted position by a pair of nuts K, L, having screw threaded connection with the stem one at either side of the elevated portion J.

The operation of my improved dental impression tray is substantially as follows:

- \Vhen an impression is to be made, the set screws F are loosened and the sections E, G, adjusted to conform to the mouth. and jaw when the set screws are tightened and the sections secured in adjusted positions. The impression material. which may consist of wax, plaster-ot-Paris or any other suitable composition. is then placed in the tray when the tray is placed in the month and the impression made in the composition. \Vhcn plaster-ot'daris or the like is used as the molding composition the tray is preferably first coated with a wax or like composition to prevent the plaster from entering into the crevices of the tray sections. Y

It will be obvious that by a simple manipulation my improved impression tray can be quickly adjusted to any conformation of mouth and jaw whether large or small, to determine the length thereof as well as the width of the arch and theheight of the palate.

Having thus described my invention I claim 1. A dental in'ipression tray, comprising a substantially domeshaped member H, coming to a point atthe.

support, and a tray carried by the support, comprising a forward section adjustable longitudinally on the support, and a pair of side sections adjustable in a plane parallel with and laterally of the adjustment of the forward sect-ion whereby to increase or 'decrease the length and width of the tray.

2. In a dental impression tray, the combination with a support, of a substantially U shaped tray carried by the support, comprising a curved forward section and a pair of side sections all of which are adjust-able relative to each other on the support to increase or decrease the length and Width of the tray; a gage adjustably carried by the support to determine the height of the pal-- ate; and means to lock the gage in its. ad-

j nsted positions.

3. A dental impression tray, comprising a support and a plurality of sections carried by said support, said sections being adjust-f able relative to each other to increase or decrease the length and width of the tray; and a gage adjustably carried by the support to determine the height of the palate, comprising a dome-shaped member, a stem connect'-.

ed thereto adapted to pass through an open iug in the support, and means to lock the gage in'its adjusted position.

*1". A dental impression tray, comprising a support and a tray carried thereby consisting of a longitudinally adjustable forward section and a pair of side sections, said latter sections being adjustable in a plane par allel with and laterally of the adjustment of the forward section; and means .to adjust- HAXIMILIAN O. THEIN.

Witnesses ALFRED WV. BARTEL, IIENRY Samoan-m. 

